Progress of Theoretical Physics · 1959 · 105 citations · 1 references
Natural SciencesPhysicsCondensed Matter PhysicsMathematical PhysicsTheoretical PhysicsEquations Of StateFree EnergySecond Law Of ThermodynamicsStatistical MechanicsVariational PrinciplesFinite-temperature EffectsPolaron DynamicsPolaron Theory
We extend the treatment of Feynman for the polaron problem at 0°K to the case at a finite temperature. A variational principle is applied to the free energy of polaron state.
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